Breakfast Burger With Sausage & Egg

Ingredients

• 4 pork sausages (75-80 g / 3 oz. each or 300 g / 10 oz. of Italian pork sausage meat)
• 4 large or extra-large eggs
• 80-100 grams semi-hard cheese (sliced, e.g. Tasty, Cheddar (3 oz.))
• 1 cup baby spinach (leaves)
• 4 Brioche buns (or other soft burger buns)
• A dollop of butter
• 1/3 cup mayonnaise
• 1/4 cup sun-dried tomato (strips, the ones that come in oil, chopped finely)
• 1/4 cup red onion (about 1/4 of a small onion, finely chopped )
• 1 tablespoon ketchup ((tomato sauce))
• Optional: a teaspoon of hot sauce